CVE-2026-39958
oma-topic: name Field in Topic Manifests (topic.json) May Allow CRLF Injection
Description
oma is a package manager for AOSC OS. Prior to 1.25.2, oma-topics is responsible for fetching metadata for testing repositories (topics) named "Topic Manifests" ({mirror}/debs/manifest/topics.json) from remote repository servers, registering them as APT source entries. However, the name field in said metadata were not checked for transliteration. In this case, a malicious party may supply a malformed Topic Manifest, which may cause malicious APT source entries to be added to /etc/apt/sources.list.d/atm.list as oma-topics finishes fetching and registering metadata. This vulnerability is fixed in 1.25.2.
INFO
Published Date :
April 9, 2026, 5:16 p.m.
Last Modified :
Oct. 26, 2026, 10:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update oma to version 1.25.2 or later.
- Remove any maliciously added APT source entries.
- Validate repository metadata integrity.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-39958.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-39958 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-39958
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-39958 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-39958 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 26, 2026
Action Type Old Value New Value Added Translation Title: oma de AOSC-Dev, Description: oma es un gestor de paquetes para AOSC OS. Antes de 1.25.2, oma-topics es responsable de obtener metadatos para repositorios de prueba (topics) denominados ’Topic Manifests’ ({mirror}/debs/manifest/topics.json) de servidores de repositorio remotos, registrándolos como entradas de fuente APT. Sin embargo, el campo de nombre en dichos metadatos no se verificaba en busca de transliteración. En este caso, una parte maliciosa puede suministrar un ’Topic Manifest’ malformado, lo que puede provocar que se añadan entradas de fuente APT maliciosas a /etc/apt/sources.list.d/atm.list a medida que oma-topics termina de obtener y registrar los metadatos. Esta vulnerabilidad se corrige en 1.25.2. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'AOSC-Dev', 'product': 'oma', 'versions': [{'status': 'affected', 'version': '< 1.25.1'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-39958', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-04-13T20:07:48.795530Z'} -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 13, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H -
New CVE Received by [email protected]
Apr. 09, 2026
Action Type Old Value New Value Added Description oma is a package manager for AOSC OS. Prior to 1.25.2, oma-topics is responsible for fetching metadata for testing repositories (topics) named "Topic Manifests" ({mirror}/debs/manifest/topics.json) from remote repository servers, registering them as APT source entries. However, the name field in said metadata were not checked for transliteration. In this case, a malicious party may supply a malformed Topic Manifest, which may cause malicious APT source entries to be added to /etc/apt/sources.list.d/atm.list as oma-topics finishes fetching and registering metadata. This vulnerability is fixed in 1.25.2. Added CVSS V4.0 AV:N/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-93 Added Reference https://github.com/AOSC-Dev/oma/commit/b361c0f219bbf91a684610c76210f71f093dbc18 Added Reference https://github.com/AOSC-Dev/oma/pull/733 Added Reference https://github.com/AOSC-Dev/oma/releases/tag/v1.25.2 Added Reference https://github.com/AOSC-Dev/oma/security/advisories/GHSA-86jc-7r6q-cr3f